Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge

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United States of America Patent

PATENT NO 10719022
APP PUB NO 20190294062A1
SERIAL NO

16103330

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Abstract

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An electrostatic charge image developing toner has a surface property index value represented by Formula S of 2.0 to 2.8, an electrostatic charge image developing toner has a surface property index value represented by Formula S of more than 2.8 and 3.5 or less, and an electrostatic charge image developing toner has a surface property index value represented by Formula S of more than 1.0 and less than 2.0 and a calculated value of a specific surface area in Formula S of 0.70 to 1.3:

description='In-line Formulae' end='lead'(Surface property index value)=(Measured value of specific surface area)/(Calculated value of specific surface area)  Formula Sdescription='In-line Formulae' end='tail'

    wherein (Calculated value of specific surface area)=(Sum of surface areas calculated from equivalent circle diameters of 4,500 toner particles in flow particle image analysis)/{(Specific gravity of toner)×(Sum of volumes calculated from equivalent circle diameters of 4,500 toner particles in flow particle image analysis)}.

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Patent Owner(s)

Patent OwnerAddress
FUJIFILM BUSINESS INNOVATION CORPTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirai, Sakiko Kanagawa, JP 27 73
Kadokura, Yasuo Kanagawa, JP 99 325
Matsumoto, Akira Kanagawa, JP 285 2336
Miura, Satoshi Kanagawa, JP 125 979
Sugawara, Atsushi Kanagawa, JP 108 351
Tomita, Daisuke Kanagawa, JP 83 397

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